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arXiv · 1710.10071

Analytic all-plus-helicity gluon amplitudes in QCD

David C. Dunbar·John H. Godwin·Guy R. Jehu·Warren B. Perkins
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Abstract

We detail the calculation of two-loop all-plus helicity amplitudes for pure Yang-Mills theory. The four dimensional unitarity methods and augmented recursion techniques we have developed, together with a knowledge of the singular structure of the amplitudes allow us to compute these in compact analytic forms. Specifically we present the computation and analytic results for the six- and seven-gluon leading colour two-loop amplitudes these being the first QCD two-loop amplitudes beyond five-points.

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David C. Dunbar, John H. Godwin, Guy R. Jehu, Warren B. Perkins. 2017-12-06. Analytic all-plus-helicity gluon amplitudes in QCD. https://doi.org/10.1103/physrevd.96.116013

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